Transactions of Materials and Heat Treatment

Title：Forming limit of LF21 aluminum alloy box-shaped part by hydrodynamic deep drawing

Authors： Cui Li Zhang Shuai Zhao Wenhua Du Jianning Rong Xuhui Yuan Jianfu Zhang Jianmin Lang Lihui

Unit： Shenyang Aircraft Corporation Tianjin Tianforging Aviation Technology Co. Ltd. Beihang University

KeyWords： hydrodynamic deep drawing limit drawing ratio forming limit LF21 aluminum alloy finite element analysis

ClassificationCode：TG359

year,vol(issue):pagenumber：2021,46(11):160-167

Abstract：

The tensile limit of LF21 (3A21) aluminum alloy material was studied by the comparative test of rigid deep drawing and hydrodynamic deep drawing, and the problem of difficulty in forming deep box-shaped parts was solved. Then, the mechanical properties and forming process of LF21 (3A21) aluminum alloy material were analyzed, and based on the finite element analysis, the drawing experiments were carried out on sheet metal by the experimental equipment. Furthermore, the forming limit diagram (FLC) and sheet metal thinning nephogram of LF21 aluminum alloy thin-walled sheet were obtained by finite element analysis and calculation, and the error of the two was obtained through the obtained nephogram, calculation results and further practical verification. At the same time, the rigid drawing comparison test was conducted, which provided a basis for the final calculation of the drawing ratio of part, which provides reliable technical support and guarantee for the lightweight research of aerospace vehicles. Finally, the limit drawing ratio of a single process of hydrodynamic deep drawing for LF21 aluminum alloy with the thickness of 1.8 mm is 3.32, which provides technical reference for the forming scheme of deep drawing parts of the material.

Funds：

作者简介：崔丽（1982-），女，博士，高级工程师，E-mail：cui1008@acic.com；通信作者：张帅（1995-），男，学士，助理工程师，E-mail：13652095025@139.com

Reference：

[1]郎利辉, 张士宏, 康达昌, 等. 板液压成形及无模充流拉深技术[J]. 塑性工程学报, 2002，9(4): 29-34.

Lang L H, Zhang S H, Kang D C, et al. About sheet hydroforming and hydromechanical deep drawing without draw die[J]. Journal of Plasticity Engineering, 2002,9(4): 29-34.

[2]苑世剑, 刘伟, 徐永超, 等. 板材液压成形技术与装备新进展[J]. 机械工程学报, 2015, 51(8): 20-28.

Yuan S J, Liu W, Xu Y C, et al. New development on technology and equipment of sheet hydroforming[J]. Journal of Mechanical Engineering, 2015, 51(8): 20-28.

[3]苑世剑. 现代液压成形技术[M]. 北京：国防工业出版社，2009.

Yuan S J. Modern Hydroforming Technology[M]. Beijing：National Defense Industry Press，2009.

[4]郎利辉, 李涛, 周贤宾, 等.先进充液柔性成形技术及其关键参数研究[J].中国机械工程, 2006, 17(S1): 19-22.

Lang L H, Li T, Zhou X B, et al. Investigation into the innovative sheet hydroforming and the effect of key process parameters[J]. China Mechanical Engineering, 2006, 17(S1): 19-22.

[5]Liu X J, Xu Y C, Yuan S J. Formation of aluminummagnesium alloy cup by hydrodynamic deep drawing with twinloading paths[J]. Journal of Wuhan University of Technology, 2009, (2): 193-197.

[6]Xu Y C, Han C, Liu X, et al. Effects of radial pressure on 5A06 aluminum alloy cup hydroforming[J]. Steel Research International, 2010, 81(9): 632-635.

[7]Jeswiet J, Geiger M, Kleiner M, et al. Metal forming progress since 2000[J]. CIRP Journal of Manufacturing Science and Technology, 2008, 1: 2-17.

[8]汪振华, 袁军堂, 胡小秋, 等. 防锈铝合金LF21的高速铣削试验[J].中国机械工程, 2009, 20(14): 1660-1664.

Wang Z H, Yuan J T, Hu X Q, et al. Experimental study on milling forces in highspeed end milling of LF21 aluminum alloy[J]. China Mechanical Engineering, 2009, 20(14): 1660-1664.

[9]黄巍, 李荻, 郭宝兰, 等. 防锈铝合金耐氯化钠盐雾腐蚀行为的研究[J]. 材料保护, 2005, (6): 52-54,77.

Huang W, Li D, Guo B L, et al. Corrosion behavior of antirust LF21M aluminum alloy in NaCl salt spray[J]. Materials Protection, 2005, (6): 52-54,77.

[10]熊爱奎. 2B06铝合金板料充液拉伸的研究[A].“装备中国”2016年“滨海杯”高端装备工业设计大赛论文集[C]. 天津, 2016.

Xiong A K. Study on the liquid filled drawing of 2B06 aluminum alloy sheet [A]. Proceedings of 2016 Binhai Cup High End Equipment Industrial Design Competition of “Equipment China”[C]. Tianjin, 2016.

[11]杨踊, 孙淑铎, 刘慧茹, 等. 航空发动机复杂型面罩子钣充液成形技术[J]. 航空制造技术, 2010,(1): 91-94,99.

Yang Y，Sun S D, Liu H R, et al. Hydro forming technology of complex profi le cover sheet of aeroengine[J]. Aeronautical Manufacturing Technology, 2010, (1): 91-94,99.

[12]丁少行, 郎利辉, 黄磊. 2024铝合金难成形高锥盒形件充液成形数值模拟[J].精密成形工程, 2014, 6(3): 31-35,40.

Ding S H, Lang L H, Huang L. Simulation research on hydroforming of hard forming deep tapershaped part of 2024 aluminum alloy[J]. Journal of Netshape Forming Engineering, 2014, 6(3): 31-35,40.

[13]Wei D B, Luo L, Hideki S, et al. Simulations of hydromechanical deep drawing using Voronoi model and real microstructure model[J]. Procedia Engineering, 2017,207: 1033-1038.

[14]Ling J, Li H G, Tao J, et al. Hydromechanical deep drawing simulation and preparation of novel AlLi alloy irregular cups[J]. Advanced Materials Research, 2015, 3797: 337-340.

[15]陈林, 熊爱奎, 王英杰, 等. 航空发动机高锥体零件充液成形工艺[J]. 锻压技术, 2020, 45(7): 72-76.

Chen L，Xiong A K, Wang Y J, et al. Hydroforming technology of high cone parts for aeroengine[J]. Forging & Stamping Technology, 2020, 45(7): 72-76.

Service：

【This site has not yet opened Download Service】【Add Favorite】